Shuttle tension



June 16, 1931; A. HANNAH 1,809,849

SHUTTLE TENSION Filed June 6. 1930 J mwwmmmmv m um 11 mm w v A .1, MN I! ll, numlw lH [QM V 5 I 3 Tn 19- Z2 0 y awventoz, I! Alezand'ar fi an na 1:, 1 7 151.11. 7 1 .12. his flue mg EH Patented its; 16, 1931 UNITED ST TES;

PATENT OFFICE,

ALnxnnijnn HANNAH, or imrnns'oir, vnw JERSEY;

SHUTTLE mm Application 'filed June 6, 1930. Serial No. 459,517.

' which shall also be adapted for use in selfthreading shuttles and, when so adapted, op

erative to impose the tension onithe thread 35 immediately, or during thatpick in which the threading itself occurs; I

To this end, given thread-guiding means in the shuttle, I provide a control device which is movable toward and from and norl3 nially urged in the direction from said means and which imposes a drag or frictional resistance to the pull of the thread in the opposite direction theforce of Wlllflh exceeds that normally urging said device in the first direction, so that when the thread is pulled in the second direction said device moves with it until it is checked, as by some positive stop, whereupon, the pull continu ng, thethread slips with reference to said device,

7 35 whereby the 'tliread is tensioned; and when relaxation of the pull nowoccurs the secondnained force then becomes active to return the device to its IlOIHlEtl'pOSltlOIl and hence take up such slack in the thread as may exist.

. 30 When the invention is used in a self-threading shuttle the usual passage perinittingentry of the thread laterally ofitself' into that -condition where the shuttle is said to be threaded may afford the said guiding means. In the drawings; 5

Fig. 1 is a plan of a shuttle embody ngthe present tension means; 1 3 7 f I Fig. 2 aside elevation thereof; i Fig. 3 is a longitudinal: substantially central section;m ;j

Figs. 4: and 5 aresections on lines and 5-5, Fig. 3; l Fig. 6 is a planof the gripp ng device; I Fig. 7 is a transverse section thereof; Fig. 8, is a longitudinal substantially central section of a shuttle embodying ainodified form of the tension means Fig. 9 is a section on line 9- 9, F g.8 Fig. 10 is a plan of the gripp ng, device shown in Figs. 8 and 9; and

there :Inay b'e a'plate 11, penetrated and thus Figs. 11 and 12 are perspective views of the clips thereof;

" The shuttle body 1 has the usual cavity 2 for the wound filling or thread package 3;

the shuttle shown being for silk fillingQa designates fur liningthe cavity. The eye or thread delivery outlet 40f the shuttle body leadinggfrom one side thereof to its cavity. may be. adapted to receive the thread in the example illustrated (which is a shuttle of the self-threading type) via a suitably formed longitudinal top passage 5 and a connecting transversepassageh which togetherform a longitudinally extendingtongue 7. overhanging these passages, the once entered thread 05 becoming thereby trapped; that is to say, assuming the illustrated shuttle is being used in a self-replenishing'loom with means to replace adepleted package 3 with a fresh one whentheshuttle is inthe right-hand shut- 7c tle-box, on the' ensuing flight of the shuttle totheleft the thread of the freshopa'ckage, having been previously attached to the cloth,

.will enter passage 5 under the portion of the tongue overhanging the same and on the return or right hand-flight will enter the eye via the passage 6 andbeco'me trapped in the eye, all in a wellknown manner. My tension ineansis adapted to assume operative relation'to the thread on the first (or here, the left+hand) -flight-of the shuttle; Of course my invention is, however, applicable where theshuttle is not of the'selfthreading type,

"but the eyeet is threaded by hand, as with a; threading hook. In any event, 456 may be here taken as affording the mentioned 7 thread guiding means.

8is' a rebent strip of wire wlioserebend rests on thebottom ofa forward extension Qbofthe cavity2 and whose extremities'are elevated and liein a .plane' above the bottom and: project toward the 7 eye 4, forming :a guide; the rebendis traversed by a pin 9 driven intothe shuttle body and whichclamps the guideSagainSt the bottom of the cavity 2;; supportedby the front surface ofthe extension 25 0f cavity 2 is *aspiral spring 10, whichimay be held in place by the extremities ofthe device 8passing through its coils;

I l-0f held in place by said extremities, against which the spring actually bears. Slidable back and forth on and lengthwise of the guideway is the thread control device, two forms of which are herein shown, the first form being constructed as follows:

A rectangular housing 12 has two opposite upright walls thereof freely penetrated by the elevated extremities of the guide 8, so that the housing is free to slide on the guide, being normally urged by spring to the dotted-line position in Fig.3. The other two opposite upright sides of the housing reach upward and form an upwardly open filling niche b between them and have upper and lower pairs of inturned tongues 13, the tongues in each pair having a space between them. A pair of clips 1415 occupies these spaces and they are adapted to receive the filling a between them; clip 14 bears against the tongues at one side and clip 15 is urged against clip 14 by a spring 16 in the housing, so that they will clamp or grip filling a lying between them. The upper ends of the clips are bent off in opposite directions, forming a V-shaped crotch at 17 (Fig. 4) whereas their lower ends are bent off in the same direction (away from the spring) and lap each other, these latter ends bein of such length that if the clips require to be removed this may be done by pressing them toward the spring whereupon they may be passed upward through the mentioned spaces. The left-hand or rearward edges of the clips are extended and flared at a: to ease the slippage of the filling between them (Fig. 6).

In the modified form the housing 18 is substantially the same as the housing 12 already described excepting that the inturned tongues such as 13 are lacking and instead there are two inturned upper tangs 19; it is penetrated by and slides on the guide 8 and is subject to the rearward pressure of spring 10, as already described. The clips 20. and 21 are i in this case, however, constructed so that a separate spring to produce the clamping or gripping pressure is unnecessary, thus: Clip 20 is inverted U-shaped; clip 21 is U-shaped and has the upper end of its relatively inner i? extremity bent outward, or over it. Each clip has in its outer extremity a hole 22 to receive one of the tangs 19 When the clips are in place in the housing, held by this engagement of the tangs in their holes 22, they J exert spring pressure on each other so as to clam or grip the filling a between them, and t ey form at 23 a V-shaped filling crotch. Their rearward edgesare extended and flared (Fig. 10.) to ease the slippage. of the filling between them, as at y.

In eachform a longitudinally extending filling trap 5-7 open at the (here, top.) surface of the shuttle exists which is adapted to receive and trap the filling when entered laterally of itself thereto in straight taut state, and there is a filling gripping device between this trap and the package in position to receive the intervening taut straight longitudinally extending portion of the thustrapped filling. Thus I insure introduction of the filling into control of said device on the first pick of the shuttle after reception of a fresh package in a self-replenishing lo0ma condition impossible were the gripping device ositioned so low as to receive the'filling on y after it had reached its fullthreaded position, or the level of the eye 4.

When the shuttle is in use the part of the filling a which is between the package 3 and filling guiding means 4 is subject to the mentioned control device which in the examples grips the filling between its clips and so maintains the tension thereon during the flightof the shuttle; that is to say, the resistanceofsaid device to slippage of the filling relatively thereto is greater than the force represented by spring 10, wherefore on each pick said device at first shifts with the filling, compressing the spring, until said device encounters a force opposing further shifting and exceeding that of the spring as when said device has compressed the spring to its full extent, whereupon slippage of the filling relatively thereto ensues. \Vhen the pull being exerted on the filling relaxes for any reason, as when the shuttle reaches the end of its'flight and slackening occurs, the force stored up in spring 10 acts to return said device and take up the slack.

If, as shown and described, the shuttle is of the self-threading type, on the first flight after introduction of a fresh package 3 the portion of the filling between said package and the point where the filling is attached to the cloth enters not only under tongue 7 but (via the crotch 17 or 2b) between the clips of the control device which thus becomes immediately active on the filling in the way explained, 1 the complete threading being accomplished on the return pick, when the fillingwill; find its ultimate location in the eye 4. It is noted that the entrance 5 to the filling guiding means 4-5-6 opens upwardly, that is, in substantially the same direction as the crutch (17 or 23).

Having thus fully described my invention what I claim is:

1. In combination, a shuttle having a filling guiding means, and a filling control device exerting a slip-grip on the filling and gu ded by the shuttle for back and forth movement in a substantially straight line and toward and from said means and normally urged from the same, said slip-grip representin a force against slippage of the filling re tively to. said device exceeding that of the force urging said device from said means.

2. In combination, a shuttle. having a fillmg guiding means, and a filling clamping device exerting a slip-grip on the filling and guided by the shuttle for back and forth. movement in a substantially straight line and. toward and from said means and normally urged from the same, said slip-grip representing a force against slippage of the filllng relatively to said device exceeding that of the force urging said device from said means. 3. In combination, a shuttle having a filling guiding means, a filling control device exerting a slip-grip on the filling and guided by the shuttle for back and forth movement in a substantially straight line and toward and from said means, and a spring opposing movement of said device toward said means and representing a force less than said slipgrip to slippage of the filling relatively to said device. 20 4. In combination, a shuttle body having a filling guiding means, a guidearranged in said body and extending toward'said'means, a filling control device exerting a slip-grip on the filling and having spaced portions penetrated by and said device being movable along the guide back and forth, and a spring opposing movement of said, device toward said means. i

5. In combination, a shuttle body having a filling guiding means, a guide arranged in said body and extending toward said means, a filling control device exerting a slip-grip on the filling and movable on the guide back and forth, and a spiral spring opposing movement of said device toward said means and penetrated by the guide. 7

6. In combination, a shuttle having a filling guiding means formed to receive the fill-v ing laterally of itself and a filling control device exerting a slip-grip onthe filling and confined by the shuttle to back and forth movement and normally urged in one direction and formed to receive the filling laterally of itself from substantially the same di-- rection as the filling isadmitted to said guiding means and having its slip-grip representing a force against slippage of the filling reling laterally of itself and a filling control device exerting a slip-grip on the filling and guided by the shuttle for back and forth movement in a, substantially straight line toward and from said means and normally urged from the same and formed to receive the filling laterally of itself from substantially the same. direction as the filling is ad mitted to said guiding means and having its slip-grip representing a force against slippage of the. filling relatively to said device exceeding that of 'the forceurging said clevice from said means.

' 9. In combination, a shuttle, a filling package therein, said shuttle having a filling guiding means formed to receive the filling laterally of itself and while extending substantially straight and longitudinally of the shuttle when in flight, and a filling gripping means arranged between said package and guiding means and confined by the shuttle to back and forth movement lengthwise thereof and normally urged toward said package and. also formed to receive the filling laterally of itself, the grip of said gripping means on the filling representing a force against slippageof the filling relatively to the guiding means exceeding that of the force urging said means toward the package.

In testimony whereof I aflix my signature.

ALEXANDER HANNAH.

atively to said device exceeding that of the r 7 In combinatioma shuttle having a filling guiding means formed to receive the fill-' force urging said device in saidQdirection.

ing laterally of itself and a filling control de- 7 vice exerting a slip-grip on the filling and 55 guided by the shuttle for back and forth normally urged from the same and formed to receive the filling laterally of itself from movement toward and from said means and substantially the same direction as the filling 7 is admitted to said guiding means and having its slip-grip representing a force against slippage of the filling relatively to said device exceeding that of the force urging said device'from said means.

8. In combination, a shuttle having a fill- 65 ing guiding means formed to receive the fill- 

